"A Cambridge academic believes he has discovered Thomas Becket’s personal book of psalms, an ancient manuscript the martyred saint and so-called “turbulent priest” may have been holding when he was murdered in Canterbury Cathedral in 1170. ...

Dr Christopher de Hamel, a historian at Cambridge University, stumbled across the book during a conversation with a colleague. De Hamel, author of the just-released Meetings with Remarkable Manuscripts, had said that books belonging to saints were generally not used as relics, and his fellow historian replied that he knew of an exception.
Who owned this Canterbury psalter?

He showed de Hamel an entry from the Sacrists’ Roll of Canterbury Cathedral, dating to 1321, which gave a detailed description of a Psalter, or book of psalms, in a jewelled binding, that was then preserved as a relic at the shrine of Becket in the cathedral. Becket, archbishop of Canterbury from 1162 to 1170, was murdered by four knights inside the cathedral, who took on the task after supposedly hearing Henry II remark: “Who will rid me of this turbulent priest?” " ...